The Act of July 27, 1868, Section 15, stated that uncalled for letters would be returned without additional postage to the writer if they were endorsed on the outside with a name and address, which applied in this case.

This cover is from the same day's mailing as Cover ID 27982, from same sender, but to a different laborer, who also failed to pick up this cover at the post office within ten days, and hence returned to sender.